Sockets seem to be insignificant in smart home products, but it is about our electricity safety. Once we buy unqualified products, it will leave us with a huge security risk. Therefore, be cautious when choosing a smart socket. Xiao Bian today summed up the USB smart socket for everyone to buy skills.

Super low price and no-name products should be carefully selected

The purchase of sockets is not as complicated as it seems. The key principle is not to buy products that are too low in price. In general, the current price of two socket ordinary socket is priced at 20 yuan, about 30 yuan for three holes, while the product with USB charging interface will increase the price by 10~30 yuan in the normal socket, the specific spread and brand. And the details of the function, such as the number of USB interfaces and the maximum charging current size.

Must choose new national standard products

In addition to circumventing ultra-low-cost products and choosing first-line brands, we should also choose products that meet the national standard when we purchase sockets. How do the national standards of sockets are defined?

The first point: The universal hole is strictly prohibited on the socket, which means that the same three-pole jack cannot use two or three plug pins. This kind of universal jack has a biting force due to the multiple plugs. On the other hand, it is difficult to meet the standards. The plug plugs and copper sheets are prone to poor contact, causing temperature rise and causing fire.

The new national standard socket two-pole and three-pole jacks are designed separately, and plugs and copper can ensure close contact. Therefore, everyone can use the plug to plug in the socket during the purchase, and ensure that there is no looseness after the insertion, and the insertion and removal process must be smooth.

The second point: If there is a three-pole jack on the socket, and the plug is two metal pins, it does not meet the standard.

The third point: Check whether the socket wires and plugs passed the 3C certification. Generally qualified sockets will be marked with the 3C certification mark and 3C certification number. The 3C certification number and internal copper wire specifications will also be printed on the cable.

At this stage, the socket of 10A/2500W, the internal single-strand copper wire specifications can not be lower than 0.75mm2, and in 2017 this specification must also be increased to 1.0mm2 or more, and there is a jack security door design in synchronization with the latest specification in 2017.

At this stage, these are not mandatory standards. Users without children at home do not have to impose requirements. Of course, if the budget is sufficient, it is better to buy the latest national standard directly.

The fourth point: All the sockets must pass the 750°C glow-wire test, that is to say, the flame of the socket shell will not appear when an open flame is encountered. The fifth point is that the internal copper sleeve design should be adopted. Of course, these two specifications that are not easy to see can only be guaranteed when purchasing big brands.

Socket USB specification on-demand purchase

General USB socket will indicate the output voltage and current of the USB interface

For the USB socket, it is to add the USB power supply module on the basis of the original socket. The better USB socket should be equipped with current intelligent identification technology, which means that it can automatically adapt to the charging current of the mobile phone or flat panel battery. And match to maximize the protection of the battery.

In addition to buying a USB socket must also consider the USB interface charging current size, to know that many manufacturers now mark the 5V/3A refers to the size of the current shared by all USB interfaces, so need to understand their needs before buying, according to the device to buy different The size of the current charging USB socket, of course, the more current the more expensive.

The content is the USB smart socket purchase method, although the price of the socket is not too high, but after all, related to security issues, so we have to be careful when buying. In the channel, priority should be given to selecting a specialty store or a large supermarket. When purchasing online, please select the official flagship store. At the same time in the choice of the brand, it is recommended to choose well-known brands.

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